Home / 21,653.53-29,881.88-12,222.70

Finding the Fourth Proportional to 21,653.53, 29,881.88 and 12,222.70

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Solution

The fourth proportional to 21,653.53, 29,881.88 and 12,222.70 is: 16,867.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,653.53 : 29,881.88 = 12,222.70 : x
  2. Step 2: Convert to fraction form
    21,653.53/29,881.88 = 12,222.70/x
  3. Step 3: Cross multiply
    21,653.53x = 29,881.88 × 12,222.70
  4. Step 4: Simplify right side
    21,653.53x = 365,237,230.91
  5. Step 5: Solve for x
    x = 365,237,230.91/21,653.53
  6. Step 6: Final answer
    x = 16,867.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.